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JBL 305P MkII Powered 5" Two-Way Studio Monitor

BH #JB305PMKII • MFR #305P MKII
92 reviews
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JBL 305P MkII Powered 5" Two-Way Studio Monitor
Key Features
  • Bi-Amplified Powered Reference Monitor
  • Dual 41W Class-D Amplifiers
  • Low Frequency Woofer: 5"
  • Neodymium Woven-Composite Tweeter: 1"
Audio engineers, producers, and musicians looking for a high-quality monitoring solution will be impressed with the  JBL 305P MkII - Powered 5" Two-Way Studio Monitor, a bi-amplified reference monitor with next-generation drivers, offering high detail, precise imaging, a wide sweet spot, and a remarkable dynamic range to enhance the mix capabilities of any modern workspace. The magnetically-shielded 305P MkII features dual 41W Class-D amplifiers, which power the 5" low frequency woofer and woven-composite 1" neodymium tweeter. The combined output of the woofer and tweeter offer a frequency response of 49 Hz to 20 kHz with a peak SPL of 108 dB.
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JBL 305P MKII Overview

From Manufacturer

Audio engineers, producers, and musicians looking for a high-quality monitoring solution will be impressed with the  JBL 305P MkII - Powered 5" Two-Way Studio Monitor, a bi-amplified reference monitor with next-generation drivers, offering high detail, precise imaging, a wide sweet spot, and a remarkable dynamic range to enhance the mix capabilities of any modern workspace. The magnetically-shielded 305P MkII features dual 41W Class-D amplifiers, which power the 5" low frequency woofer and woven-composite 1" neodymium tweeter. The combined output of the woofer and tweeter offer a frequency response of 49 Hz to 20 kHz with a peak SPL of 108 dB.

The monitor features JBL's Image Control Waveguide technology for accurate audio reproduction and JBL's Slip Stream port design for improved bass response. The 305P MkII is equipped with a boundary EQ for controlling the low frequency response when placed near a wall, as well as a 3-position HF trim switch. To ensure flexible connectivity, JBL included a balanced XLR input and a balanced 1/4" TRS input, both of which feature dented level control. Other features include a selectable input sensitivity switch that ensures compatibility with a range of signal sources. The JBL 305P MkII ships with a power cord.

  • Patented Image Control Waveguide for detailed imaging and a broad, room-friendly sweet spot
  • High-quality JBL transducers for optimized transient response and improved linearity
  • Patented Slip Stream low-frequency port for superior bass performance at all playback levels
  • Dual integrated, custom Class-D amplifiers provide 112W of power for high output and dynamic range
  • Boundary EQ settings compensate for low-frequency variants introduced by the environment
  • HF Trim switch adjusts high-frequency output to room acoustics or personal preferences
  • Flexible connectivity with balanced XLR and 1/4" TRS inputs, +4 dBu / -10 dBV input-sensitivity switch and adjustable volume control
  • Engineered to JBL Linear Spatial Reference design criteria for outstanding accuracy in any working space
  • Strenuous JBL 100-hour full-power test ensures years of reliability
  • Sleek, modern design provides a visual upgrade to any studio
UPC: 691991007705

JBL 305P MKII Specs

Key Specs
Monitor Type & Configuration
Active 2-Way
Total Power Output
82 W
Tweeter
1x 1" / 25.4 mm Dome
Woofer
1x 5" / 12.7 cm Cone
Frequency Range
43 Hz to 24 kHz (-10 dB)
Audio I/O
1x XLR 3-Pin Balanced Line Input
1x 1/4" TRS Balanced Line Input
Digital Audio I/O
No
Network I/O
No
Wireless
No
Monitor Type & Configuration
Active 2-Way
Number of Included Monitors
Single Monitor
Enclosure
Bass-Reflex/Ported, Shielded
Total Power Output
82 W
Drivers per Monitor
Tweeter
1x 1" / 25.4 mm Dome
Woofer
1x 5" / 12.7 cm Cone
Amplifiers
HF: 41 W Class-D
LF: 41 W Class-D
Performance
Frequency Range
43 Hz to 24 kHz (-10 dB)
Frequency Response
49 Hz to 20 kHz ± 3 dB
Maximum Sound Pressure Level (SPL)
108 dB
Signal-to-Noise Ratio
75 dBA
Total Harmonic Distortion (THD)
<10%
Maximum Input Level
+20.3 dBu (Balanced)
+6 dBV (Unbalanced)
Protections and Limiting
Peak Limiter
Signal Processing
EQ
HF Shelf
LF Shelf
Crossover Frequency
1725 Hz, 24 dB/Octave Slope
Connectivity
Audio I/O
1x XLR 3-Pin Balanced Line Input
1x 1/4" TRS Balanced Line Input
Digital Audio I/O
No
Network I/O
No
USB
No
Wireless
No
Mobile App Compatible
No
Power
AC Input Power
100 to 240 VAC, 50/60 Hz
Physical
Color
Black
Monitor Orientation
Vertical
Enclosure Material
ABS, MDF
Mounting Points
No
Dimensions (W x H x D)
7.3 x 11.7 x 9.1" / 185.4 x 297.2 x 231.1 mm
Weight
10.4 lb / 4.7 kg
Packaging Info
Package Weight
12.55 lb
Box Dimensions (LxWxH)
14.8 x 10.2 x 2.5"

JBL 305P MKII Reviews

Very good for my current needs

By Thomas
Rated 4 out of 5
Date: 2026-05-17

I've been looking for new monitors for sometime, having read quite a bit on ASR about how DSP technology has improved studio monitor design in the last decade. My previous monitors were mid-level- not cheap, and purchased for the mid-field in a room I no longer have. I have been arm-wrestling with them since then. Great, but too big for my new room. I wanted a solid 6" near-field choice with nice bass extension, and settled on these to try. Size, price, specs, reviews, manufacturer- everything lined up. I figured if I liked them well enough, I'd spring for something in the mid-level price range again, perhaps the 7 series. I may not have to. The 306Ps are very, very good monitors for my needs in post and music. I usually don't prefer speakers with rear-firing ports- rather, front facing ports or sealed enclosures, just a preference- so I didn't expect them to suit me. But they do. Things have changed, I think for the better. I may not have to look for a mid/high-end monitor now, but I do like speaker shopping, so maybe down the road...

Very accurate

By William
Rated 5 out of 5
Date: 2025-12-17

Flat response. Not party speakers but you can equalize the input. Best for users that care about accuracy. Best used with TRS cables to reduce RF. There is a hiss at higher volumes and unshielded PC's with glass sides may introduce a lot of noise if using them while playing a video game. Difficult to match correctly with 3rd party subwoofer - probably best paired with the expensive JBL subwoofer - I tried a cheaper one but will probably get the JBL when on sale .

See any errors on this page?

Is there an EU power cord version available? One ...

Is there an EU power cord version available? One for use in Germany?
Asked by: Ryan
It supports both US and European voltages so all you would need is a standard US to German plug adapter not a voltage convertor. Also, the end which goes into the speaker is the standard computer power cable format so a cable should be easy to find.
Answered by: Michael
Date published: 2022-01-06

None of my audio output devices have balanced ...

None of my audio output devices have balanced connections - yet the back of the 305P's only have balanced inputs. If I use, let's say an audio cable that has a TRS connector on end (going to the speakers), and an RCA cable on the other end (going to my audio sources), will this work with the 305's?
Asked by: Bernd
It will work. For instance, I use them with my phone headset jack as the source. It may pick up more noise, but that may be an issue only with very long cables and in a professional situation. I never noticed any noise with my setup.
Answered by: Luigi
Date published: 2022-01-06

Can these be placed laying on their side?

Can these be placed laying on their side?
Asked by: kristopher
Yes, they can.
Answered by: Robert
Date published: 2021-07-10

Does this speaker have hole mount in the bottom?

Does this speaker have hole mount in the bottom?
Asked by: Charles
No, the JBL 305P MKII does not have pole mount sockets on the bottom.
Answered by: Lisa S
Date published: 2021-01-02

Is there an EU option for the power cord? For ...

Is there an EU option for the power cord? For example, a power cord that will be usable in Germany?
Asked by: Ryan
These speakers come with a standard three-prong connector and a cable like this: https://www.monoprice.com/product?p_id=5280 which should be easy to find in any country (with the appropriate wall plug).
Answered by: Luigi
Date published: 2021-04-10

How long is the included power cable?

How long is the included power cable?
Asked by: john
The included power cable for the JBL 306P MkII Powered 6.5" Two-Way Studio Monitor is approximately 6-feet long.
Answered by: Lisa S
Date published: 2024-01-14

Do I need anything else to connect to my Mac ...

Do I need anything else to connect to my Mac Studio? Cables etc
Asked by: Dan
Aside from the items included in this JBL 305P MkII Studio Monitor Kit, the only other item you will need is a short standard stereo aux cable such as the Pearstone Stereo Mini Male to Stereo Mini Male Cable - Black, 3' (B&H # PEMMSA103B) which will be used to connect the computer's 3.5mm audio output (headphone jack) to the 3.5mm TRS input on the Senal PMC-II Passive Monitor Controller. If you are using a USB audio interface and want to connect the PMC-II and JBL speakers to the interface, you can use the audio output(s) from the interface and connect them to the right/left XLR-1/4" combo jack inputs OR to the 3.5mm input on the PMC-II Monitor Controller using the appropriate cables (not included).
Answered by: Lisa S
Date published: 2023-06-13

Would these speakers sound good at low volume ...

Would these speakers sound good at low volume levels, or do they need to be turned up to sound good?
Asked by: Ernest
The JBL 305P MkII - Studio Monitor Kit with Passive Monitor Controller, Speaker Pads, and Cables will sound good at both low and higher volume levels.
Answered by: David M
Date published: 2026-01-19
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